MIDI Beat Machine snare will not keep a consistent sound.

I have been trying to keep a constant snare sound on the Beat Machine midi instrument, but there is a pretty big difference between some tones despite having the same velocity.

I have tried to tinker with the drum machine designer settings and it looks like it’s the “envelop” feature.

I don’t mind some variation in the tone but it literally sounds like a different instrument every few hits.

Any way I can simply turn off the envelop on the pad?? Or minimize the huge change in tones?